Home / 19,486.64-29,231.44-5,636.72

Finding the Fourth Proportional to 19,486.64, 29,231.44 and 5,636.72

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Solution

The fourth proportional to 19,486.64, 29,231.44 and 5,636.72 is: 8,455.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,486.64 : 29,231.44 = 5,636.72 : x
  2. Step 2: Convert to fraction form
    19,486.64/29,231.44 = 5,636.72/x
  3. Step 3: Cross multiply
    19,486.64x = 29,231.44 × 5,636.72
  4. Step 4: Simplify right side
    19,486.64x = 164,769,442.48
  5. Step 5: Solve for x
    x = 164,769,442.48/19,486.64
  6. Step 6: Final answer
    x = 8,455.51

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.